/*
 * Copyright 2002-2006 the original author or authors. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language governing permissions and limitations under the
 * License.
 */
package pikes.html.xhtml;

import java.util.LinkedList;
import java.util.List;

import pikes.uri.URI;
import pikes.util.Assert;
import pikes.xml.XMLTag;

/**
 * <code>&lt;a/&gt;</code> tag, see <a href="http://www.w3.org/TR/html401/struct/links.html#h-12.2">A element</a> in
 * HTML specification.
 * @author Peter Bona
 * @see <a href="http://www.w3.org/TR/html401/struct/links.html#h-12.2">The A element in HTML specification</a>
 */
public class Anchor extends NonRootTagFactory implements Special, CoreAttributes, I18N, Events {

	private URI href = null;

	private List<Inline> inlines = new LinkedList<Inline>();

	/**
	 * Creates a link without any attribute.
	 */
	public Anchor() {
		// left intentionally empty
	}

	public Anchor(URI uri) {
		Assert.notNull(uri);
		this.href = uri;
	}

	public Anchor(URI uri, Inline inline) {
		this(uri);
		if (inline != null) {
			inlines.add(inline);
		}
	}

	public Anchor(URI uri, CharSequence content) {
		this(uri, new PCData(content));
	}

	public Anchor(Inline inline) {
		if (inline != null) {
			inlines.add(inline);
		}
	}

	@Override
	protected CharSequence getTagName() {
		return "a";
	}

	public void add(Inline inline) {
		if (inline != null) {
			inlines.add(inline);
		}
	}

	public void setUri(URI uri) {
		this.href = uri;
	}

	@Override
	protected void decorateCreatedTag(XMLTag tag) {
		tag.addAttribute("href", href);

		for (Inline inline : inlines) {
			inline.decorateTag(tag);
		}
	}

}
